Tob of said pateick adie



(No Mddel.

1?. ADIE, Decd.

W. G. HENDERSQN, Administrator. DRIVING BELT AND WHEEL.

W Pate"nt ed1Tan. 24, 1888.

I r ters of reference marked 3 5 about the periphery ther UNITED STATES PATENT "omen f PATRIOK' ADIE, OF LONDON, COUN TY G. HENDERSON, OF WASHINGTON, DISTRICT OF COLUMBIA, ADMINISTRA4.

DECEASED; j 4 r TOR SAID PATRICK ADIE,

OF MIDDLESEX, ENGLAND; WILLIAM DRlVlNGf-BELT AND WHEEL. l

SPECIPIlICATfON forming part of Letters Patent N 0. 376,975, dated January 24, 1888.

Application filed January 5 ment in the Construction of Driving-Belts and r the Wheels to which they are Applied, (for which I have filed a provisional specification in England, N 0. 6,442, dated June 1, 1885, and obtained L'ettersPatentin Belgium, No.69, 927,

dated August 19, 1885, and in France, No. 170,671, dated August 17, 1885;) and I do hereby declare that thefollowing is a full and exact description thereof, reference being had nd to the letto the accompanying drawings, a

thereon, makingapart of this specification. 7

My invention relates to an improvement in gearing for transmitting power, and has -for its object to combine with the positive action and movement of toothed gear all the advantages incident to the use of frictional driving belts orchains, withjan entire freedom at all times from the undue strain upon the bearings occasioned by the tightening up of the ordi- 2 5 nary flexible belts operating by frictionalone. This object is attained in myinvention by the use of a belt formed of thin sheet metal, preferably steel, corrugated transversely to present a uniform series of curved projections and intermediate depressions, (so that the edges of of the belt describe a continuous succession of short reversed curves or und ulations,) in combination with a pulley having counterpart pro-- jections and depressions formed continuously eof, parallel with its axis, so as to present a continuous succession of curved recessesadapted to receive and en gage the curved projections of the belt, all'as hereinafter more fully described.

The belt of corrugated metal may have a plain strip of thin steel or otherflexible material attached to one side thereof, thereby imparting additional tensile strength to the belt; or the belt may be formed of several su- 745 perimposed thicknesses or layers uniformly corrugated. i

Figure 1 of the accompanying drawings is a side elevation of my improved corrugated metallic driving-belt,

23, 1886. Serial No. 189,475. (Nb model.) Patented in England June 1 August 17, 1885, No.170,671, and in Belgium August 19, 1885; No. 69,927.

, 1885 No1t3442; in France illustrates its application for driving'a wheel, B, from a main wheel, A, so that the. two shallrevolve in the same direction, and also for driv ing a wheel, 0, from said main wheel, so that the two shall revolve in opposite directions. Fig's.'2, 3, 4, and 5 illustrate various modifications in the construction oi the belt. r

belt made of a single strip of transversely corwhen the power to be'transmitted therebyisf moderate The transverse corrugations in the in combination with the strip are made to follow each other uniformly and continuously in the entire length of the belt, and are soformed as to present, in trans verse section taken longitudinally throughthe I of a'semicircular form.;

A B 0 represent the form of wheels required for use with thebelt.' These wheels or pulleys are constructed with transversely grooved or corrugated peripheries the curvesv of whose projections and depressions present, in trans verse'section taken in a plane at a'rightangle to the axisof thewheel, semicircular curyes of a radius approximating closely to or COI'IB'. I spon'ding with the radii of the curves in. the

belt shall fit accurately upon the wheel to'en gage the same closely and evenly.

When the wheels connected by'the belt are to revolve in the same direction, the. corrugated belt 10 may be re-enforcedby a plain flexible strip, 15, riveted to it at intervals, as shown in Fig. gt, so as to span as a chordthe several arcsformed by the'eurves inthebelt; or, for use with wheels tobe driven in opposite directions, as B and O in single motor, A, the belt may of two-flexible corrugated stri bined with an intermediate strip, 15, as shown-in Fig. 5. ting great power several similar thin corrugated'strips, 11 1'2 13, maybe superimposed and riveted together to form a compound belt, 9 5 asshownin Fig.3. 7 Q The transverselygrooved wheels for use with my improved corrugated steel belting be constructed 7 ps, 10 10, ,corn-" corrugated pulleys made to engage it,-land it a 10 in said drawings'represents the improved rugated' metal in the forrn adapted for use do belt, a succession of equal reverse curves each 1 .belt 0m be appliedto the wheel, sothat the r 3 f Fig.1, from a 'Y 9 A A plain straight For transmit,

may have theirprojections or transverse corrugations either solid and integral with them or made separately and affixed to them as toothed or mortise wheels are usually made, (see at A and C, Fig. 1,) or they may have strips 16 of corrugated belt fastened on their peripheries, as indicated wit-h respect to B in Fig. 1.

My improv d corrugated steel belting supplies, through its form, the required flexibility and elasticity demanded in a good belt, together with the durability and strength of well-tempered steel. In operation it saves, statically, over one-half or nearly two-thirds of the power at present employed in all belted machinery. For example, in a machine-shop the driving-belt must-be tight enough to drive all the other belts, and these in their turn must be tight enough each to driveits respective machine and take its out without slipping.whereas with the steel corrugated belting these two enormous sets of friction are virtually got rid of, the steel belt being loose andacting by the nearly square pull on the teeth at the periphery as it comes ofi' the pulley.

I claim as my invention- Lllhe combination, with a metallic drivingbelt formed with an uninterrupted succession of transverse corrugations to present in longitudinal section an unbroken series of reversed o curves substantially semicircular in form, ofa wheel or pulley having a counterpart transversely grooved or corrugated periphery adapted to engage said belt, substantially in the manner and for the purpose herein set forth.

2. A driving-belt constructed of a thin metallic strip having an uninterrupted succession of uniform transverse semicircular bends or corrugations, presenting in longitudinal section .an unbroken series of reversed curves, in combination with a plain straightmetallic strip superimposed and secured longitudinally thereon, to serve as a continuous chord for the several arcs of said curves, substantially in the manner and for the purpose herein set forth.

3. The combination of the pulley, a corrugated band of metal applied to the pulley, and the corrugated belt fitting to the said pulley, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PATRICK ADIE.

\Vitnesses:

CHAS. Rooms, JAMES BRTSTOW. 

